Some of the complexity in this model could have been avoided had I selected the curves from the Rhino file more judiciously, or treated them as two holed surfaces (below, yellow group). The two duplicate curves may still have caused trouble but that’s a separate issue.
LobbyWall_2021May6a.gh (1.5 MB)
If the entire model (the Voronoi holes) were done in GH instead of Rhino, such organization tends to come naturally.